Beltina



(No Model.) ,2 Sheets-Sheet 1.

B. DICK.

BELTING. No. 401,642. Patented Apr. 16, 1889.

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(No Model.) 2 Sheets-Sheet 2.

R. DICK.

BELTING.

No. 401,642. Patented Apr. 16, 1889.

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NITED STATES Parent rrrcn.

BELTING.

SPECIFICATION forming part of Letters Application filed July 9, 1887.Serial No. 243,901. (No model.)

Patent No. 401,642, dated April 16, 1889.

Patented in England October 14, 1885,1T0. 12,253, and June 25,

To aZZ whom it may concern.-

Be it known that I, ROBERTDIOK, a subject of the Queen of Great Britainand Ireland and residing at Greenhead, Glasgow, in the county of Lanark,Scotland, have invented certain Improvements in Ropes or Round Bands,(for which I have obtained British Patents No. 12,253, dated October 14,1885, and No. 9,043, dated June 5, 1887,) of which the following is re aspecification.

The object of my invention is to produce ropes or round bands of greatgripping power and tensile strength for motive-power driving and haulingpurposes. This object I attain by forming composite ropes or round bandsfrom cotton, canvas, or equivalent strong woven fabrics, by preparing ortreating the fabric in the web with gutta-percha solution on both itssurfaces, as described in the specification accompanying my application,Serial No. 243,902, and folding the fabric, if neces sary, to form therequisite breadth and the requisite number of plies or rolls of cloth,with or without the addition of a layer or layers of a tough elasticselected gutta-percha or of balata or gutta-percha compounds between thesaid plies of solutionized canvas. The webs thus impregnated with aguttapercha solution, with or without the addition of a layer or layersof gutta-percha compound, are rolled up into round bands or ropes, ashereinafter described.

In the accompanying drawings, Figure 1 shows a cross-section of the fiatstrip of single 3 5 thickness of canvas or cloth, A, first coated onboth sides with the gutta-percha solution, and preferably afterwardhaving a thin coating of the tough elastic guttapercha mixture orcompound a rolled on one side, all prepared as hereinbefore described,and which I use for the smaller sizes of round bands-as from one-fourthinch to three fourths inch in diameter. Fig. 2 shows a correspondingcross-section of a prepared strip of canvas, A

M, which I use for the larger sizes of round bands-as from three-fourthsinch to two inches in diameter-this strip being coated and prepared thesame as Fig. 1, but having a portion at a as doubled up in the fiat formto be rolled up in the central part of the band, while the singlethickness cfi'forms the outer ring-layers to make it more round anduniform at the edge a, forming the outer longitudinal joint of thecompleted round band, which in either case, whether made of the singleor doubled canvas, have this for all the larger-sized bands alternatedand attached by the layer a of tough mixtures of guttapercha, all rolledand compressed in accord ance with my present improvements, as willhereinafter be more fully described, and preferably with the layer ofgutta-percha a outside the canvas.

Figs. 1 and 2-, respectively, indicate in end section and side elevationa short portion of a solid round band, as rolled by hand or otherwise,ready for being compressed out of the single thickness, and the doublethickness of canvas, as respectively shown in Figs. 1 and 2.

Figs. 3 and 4. show a longitudinal section and an end view of a metallicdraw bore or socket, B, as secured in its draw beam or frame F,especially for drawing and compressing the smaller sizes of said roundbands A through, after they have been circumferentially rolled, while inlong lengths, by hand over a long table, as shown in Fig. 1 or 0therwiserolled and compressed in front of the draw-bore B or other shaping andcompressing mechanism, such as round-groove rollers; or it may be longround-grooved shaping and compressing boxes or disks made in two halvesor parts.

Figs. 5 and 6 show a side and front end elevation of one arrangement ofrollin g-machine suitable for so compressing and shaping the previouslyprepared and rolled bands. This machine consists of a pair of rollers, C0', working over each other with various-sized round grooves B in them,and having their spindle-journal bushes fitted in vertical slottedguides supporting side frames, D, secured together by transverse staysand to a suit able foundation or frame at a convenient height forthe'workmen to feedor guide the previously-rolled bands, as A Figs. 1and 2*, while yet hot and plastic, into the suitablesized grooves B, asindicated by the arrows,

over a guide-table, D D", or, it might be, a traveling band or rollersat a convenient level on the entering and delivery side of the rollers GO. are geared together by spur-wheels C, and the lower one, 0, would bedriven by a pulley, O and abelt, 0 passed round it from any convenientoverhead motive-power driving shaft and pulley, as arranged.

Figs. 7 and 8 show an end and front elevation of one construction oflong round-groo ved compressing and shaping box or die G G, and itscompressing screw-press H. The boxdie is preferably made of hard woodand in two halves, with the internal compressing grooved parts, B, madeof metallic tubing in two halves also, but cut and jointed on a slightlydifferent horizontal plane from the box-frame parts G and G, so as tofreely admit of the insertion of the previously-rolled band A, Fig. 2,either by hand or further shaped in the rolling-machine, Figs. 5 and 6,and also insure the perfect coincidence of the two parts of thepressing-tube B when put together, to prevent it making a ridge or jointfin in the round driving band A while being compressed in the two partsB.

Fig. 9 shows a plan of the lower half of the pressing-box G, ready forinserting the rolled band, and showing its shaping-tube B as fitted andscrewed in the center of the Wood part G, preferably with an outerbedding of cloth, g, between the wood box G G and the metallic tube B,to allow of a little yielding to insure the true adjustment of the twohalves of the tube parts B when their guide edges are pressed togetherin the screw-press H, of which there would be as many ranged along thetable and compressing-box G G as are found necessary according to thelength of the box or that of the round band being compressed at onetime.

Referring to the drawings, to form a rope or band, I take a strip orplat-band of one thickness of the canvas or fabric A, solutionized onboth sides, or of the composite fabric described, having the layer a ofthe elastic or tough flexible gutta-percha or gutta-percha compound, asdescribed in reference to and shown in Fig. l, and pass it throughaheatingchamber, or spread it over a heated table and roll itlongitudinally or lengthwise by hand or otherwise while soft into a ropeor round band, as shown in Fig. 1*, but of the full length of the bandif possible-that is, for the smaller sizes of ropes or round bands. Ithen pull it through one, two, or more draw-bores or dies, B, withpropersized drawing-holes, B, to compress and shape it, as shown inFigs. 3 and 4; or it might run through annularly-grooved drawing rollsor rollers C C, as shown in Figs. 5 and 6, to give the rope a uniformcircular cross-section. For shaping and compressing the larger-sizedround bands A as shown in Fig. 2, these would preferably be rolled whilethe band was hot and the guttapercha plastic, as before described,through The upper and lower rollers, C 0',

the annular grooves B of suitable size in the rollers G O, as indicatedin the rolling machine shown in Figs. 5 and 6; or otherwise these bandsA might be laid in the lower half of the tubular pressing-box G, Fig. 9,and have the upper half, G placed over it, and the two put into thescrew-presses H, as indicated in Figs. 7 and 8, and compressed 1nto thetrue circular shape of the band.

In some cases when a fin or mark is formed along the sides of the bandsby either the joints of the rollers C O or the joints of the two partsof the compressing mold or die G G, the band maybe passed through theroller twice with the fin in the up-and-down direction to have itcompletely rolled out and smooth; or vertical rollers might be mountedin front of the horizontal rollers, which would take out all marks ofthe fin during the first rolling through the machine; and in like mannerthe band could be turned round in the molds G G and get a secondpressure to make them even and smooth and remove the mark of the jointof the mold before cooling. Either before or after rolling I maysuperadd a thin layer of gutta-percha compound on the outer surface.

Different thicknesses of canvas or cloth, A, would be used for makingthe different strengths or sizes of round bands A A and they wouldpreferably be rolled, as shown 1n Figs. 1 and 2 with a hole in thecenter, or it might be with a flexible cord of hemp or cot-ton; or forthe larger sizes, as A in Fig. 2 it might be a central round core ofindiarubber or small tube of india-rubber to give greater flexibilityand elasticity to the finished round bands, and preferably finished withthe layer of gutta-percha compound a all round outside.

The gutta-percha or gutta-percha compound employed in layers a a betweenthe thicknesses of canvas A in the manufacture of these ropes or roundbands A A should be of a flexible and elastic tough charactersuch as themixture of selected tough guttapercha or of balata, which is the gum ofthe bullet tree, or other equivalent mixtures or compounds ofgutta-percha, which would give the slightly flexible and tough elasticcharacter desired.

The object of introducing the layers of gutta-percha compound a betweenthe single or double layers of canvas or fabric A in the ropes or roundbands A is to give them flexibility and gripping-power, which cannotwell be obtained by the mere use of layers of gutta-percha orgutta-percha solution with the cotton cloth.

When these round bands are required for the driving of power-looms orother textile machinery, or purposes where a very regular and delicategripping and driving action is required, suitable only for the power tobe transmitted, and which would slip when extra strain was broughtagainst it, and would yet maintain its maximum gripping effect withoutglazing or slipping, I, by a further improvement, attach a layer or'thickness of serge or other woolen-surface fabric on the working orgripping surface or circumference of the band by passing both through ina heated state between the pressing and gripping rollers, (shown inFigs. 5 and 6 of the drawings.) or in the pressing-molds, Figs. 7 and 8.

When these ropes or round bands are to be used for hauling or otherpurposessuch as traces for carriages or for the drawing of a riculturalimplementsthey would preferably be coated on the outer circumferentialsurface with gutta-percha before being finished to preserve the canvasfrom the weather and from wear and tear.

What I claim is 1. Asolid round band or rope composed of fiat webs ofcanvas or other fabric impreg- 3. A composite solid round band or ropecomposed of alternate rolls of canvas or gutta percha compound with alayer of cloth on the outer surface, as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBERT DICK. Witnesses:

W. R. M. THOMSON, JOHN SIME, Both of 96 Buchanan Street, Glasgow,Scotland.

